頂(ding)管(guan)(guan)是(shi)(shi)地(di)下工(gong)(gong)程(cheng)(cheng)，而(er)工(gong)(gong)程(cheng)(cheng)地(di)質(zhi)具有不均勻(yun)性，陽谷頂(ding)管(guan)(guan)，一旦遇到地(di)質(zhi)與設(she)計不符、頂(ding)管(guan)(guan)機頭故(gu)障或(huo)滲(shen)漏進水等意外(wai)情況，處理起來與地(di)面相比(bi)，無論是(shi)(shi)復(fu)雜程(cheng)(cheng)度、還(huan)是(shi)(shi)時間和(he)資源的(de)(de)投入(ru)，都會(hui)更大(da)。濮陽鋼筋混凝土頂(ding)管(guan)(guan)，有的(de)(de)甚至不可收(shou)拾(shi)而(er)導致整個工(gong)(gong)程(cheng)(cheng)失(shi)敗。故(gu)頂(ding)管(guan)(guan)工(gong)(gong)程(cheng)(cheng)風險比(bi)一般土建工(gong)(gong)程(cheng)(cheng)更大(da)，要求技術(shu)人(ren)員除(chu)能(neng)準確選(xuan)擇頂(ding)管(guan)(guan)施(shi)工(gong)(gong)工(gong)(gong)藝(yi)和(he)設(she)備外(wai)，還(huan)要善(shan)于總結、技術(shu)超前、能(neng)事前分析到可能(neng)出(chu)現(xian)的(de)(de)各種問(wen)題，從而(er)避免意外(wai)和(he)風險出(chu)現(xian)。

中繼(ji)環(huan)(huan)(huan)頂(ding)管(guan)阻力(li)正面(mian)(mian)——不變側(ce)面(mian)(mian)摩擦力(li)——隨頂(ding)進距離(li)增大顯然，將長(chang)距離(li)頂(ding)管(guan)分(fen)成(cheng)若干段(duan)(duan)，在段(duan)(duan)與(yu)段(duan)(duan)之間設置中繼(ji)環(huan)(huan)(huan)，接力(li)頂(ding)進設備可(ke)使(shi)后(hou)續段(duan)(duan)只克服頂(ding)進管(guan)段(duan)(duan)側(ce)面(mian)(mian)摩擦力(li)即(ji)可(ke)。按(an)自前至后(hou)順序開動(dong)中繼(ji)環(huan)(huan)(huan)油(you)(you)(you)缸(gang)(gang)，水泥頂(ding)管(guan)廠家，頂(ding)進管(guan)道可(ke)實現(xian)長(chang)距離(li)頂(ding)進。中繼(ji)環(huan)(huan)(huan)——在中繼(ji)環(huan)(huan)(huan)成(cheng)環(huan)(huan)(huan)形布置若干中繼(ji)油(you)(you)(you)缸(gang)(gang)，油(you)(you)(you)缸(gang)(gang)行程200mm。中繼(ji)環(huan)(huan)(huan)油(you)(you)(you)缸(gang)(gang)工作時(shi)，后(hou)面(mian)(mian)的管(guan)段(duan)(duan)成(cheng)了后(hou)座，將前面(mian)(mian)相鄰(lin)管(guan)段(duan)(duan)推向前方，分(fen)段(duan)(duan)克服側(ce)面(mian)(mian)摩擦力(li)。

頂(ding)管(guan)技(ji)(ji)(ji)術(shu)是一項用(yong)于市政施(shi)工(gong)(gong)(gong)的(de)非(fei)開挖(wa)掘(jue)進(jin)式管(guan)道(dao)鋪設施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)。優點(dian)在(zai)于不影響周圍環境或者(zhe)影響較小(xiao)(xiao)，施(shi)工(gong)(gong)(gong)場地(di)小(xiao)(xiao)，噪音小(xiao)(xiao)。而且能(neng)夠深入(ru)(ru)地(di)下(xia)作(zuo)業(ye)，這是開挖(wa)埋管(guan)無(wu)法(fa)比擬的(de)優點(dian)。但(dan)(dan)是頂(ding)管(guan)技(ji)(ji)(ji)術(shu)也有(you)缺點(dian)，施(shi)工(gong)(gong)(gong)時間較長，工(gong)(gong)(gong)程造價高(gao)等。目前世界(jie)上的(de)頂(ding)管(guan)技(ji)(ji)(ji)術(shu)已經發展到了(le)十分成熟的(de)階段(duan)，各種各樣(yang)的(de)頂(ding)管(guan)方式方法(fa)出現。但(dan)(dan)是，萬變不離其(qi)宗，頂(ding)管(guan)施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)的(de)原理(li)都是一樣(yang)的(de)。一般都是垂直地(di)面做工(gong)(gong)(gong)作(zuo)井(jing)，鋼承口(kou)頂(ding)管(guan)，然后用(yong)高(gao)壓液壓千(qian)斤(jin)頂(ding)，將(jiang)水泥或者(zhe)鋼制(zhi)管(guan)道(dao)頂(ding)入(ru)(ru)地(di)下(xia)，各種技(ji)(ji)(ji)術(shu)的(de)差別(bie)就在(zai)于運(yun)輸管(guan)道(dao)內挖(wa)掘(jue)出來(lai)的(de)泥土，石頭等渣的(de)方法(fa)，有(you)人工(gong)(gong)(gong)的(de)，有(you)水抽式的(de)，的(de)還有(you)遙控的(de)。